[TS-636]<fix>:escape % with \ suport

src/kit/shell/src/shellEngine.c

@@ -262,7 +262,7 @@ int32_t shellRunCommand(TAOS* con, char* command) {
     }
 
     if (c == '\\') {
-      if (quote != 0 && (*command == '_' || *command == '\\')) {
+      if (quote != 0 && (*command == '_' || *command == '%' || *command == '\\')) {
         //DO nothing 
       } else {
         esc = true;

src/util/src/tcompare.c

@@ -278,6 +278,7 @@ int patternMatch(const char *patterStr, const char *str, size_t size, const SPat
     
     if (j <= size) {
       if (c == '\\' && patterStr[i] == '_' && c1 == '_') { i++; continue; }
+      if (c == '\\' && patterStr[i] == '%' && c1 == '%') { i++; continue; }
       if (c == c1 || tolower(c) == tolower(c1) || (c == pInfo->matchOne && c1 != 0)) {
         continue;
       }

src/util/src/tutil.c

@@ -64,7 +64,7 @@ int32_t strRmquote(char *z, int32_t len){
     int32_t j = 0;
     for (uint32_t k = 1; k < len - 1; ++k) {
       if (z[k] == '\\' || (z[k] == delim && z[k + 1] == delim)) {
-        if (z[k] == '\\' && z[k + 1] == '_') {
+        if ((z[k] == '\\' && z[k + 1] == '_') || (z[k] == '\\' && z[k + 1] == '%')) {
           //match '_' self
         } else {
           z[j] = z[k + 1];

tests/script/general/parser/like.sim

@@ -23,7 +23,7 @@ sql create table $table2 (ts timestamp, b binary(20))
 sql insert into $table1 values(now,    "table_name")
 sql insert into $table1 values(now-1m, "tablexname")
 sql insert into $table1 values(now-2m, "tablexxx")
-sql insert into $table1 values(now-2m, "table")
+sql insert into $table1 values(now-3m, "table")
 
 sql select b from $table1 
 if $rows != 4 then
@@ -56,6 +56,45 @@ if $rows != 1 then
   return -1
 endi
 
+sql create database escape_percentage;
+sql use  escape_percentage;
+$table1 = tablename
+$table2 = `table%`
+
+sql create table $table1 (ts timestamp, b binary(20))
+sql create table $table2 (ts timestamp, b binary(20))
+
+sql insert into $table1 values(now,    "table%name")
+sql insert into $table1 values(now-1m, "table%")
+sql insert into $table1 values(now-2m, "table%%%")
+sql insert into $table1 values(now-3m, "table")
+
+sql select b from $table1 where b like 'table\%'
+print $rows
+if $rows != 1 then 
+  return -1
+endi
+sql select b from $table1 where b like 'table\%\%\%'
+print $rows
+if $rows != 1 then 
+  return -1
+endi
+sql select b from $table1 where b like 'table%'
+print $rows
+if $rows != 4 then 
+  return -1
+endi
+sql show tables like 'table\%'
+print $rows
+if $rows != 1 then 
+  return -1
+endi
+sql show tables like 'table%'
+print $rows
+if $rows != 2 then 
+  return -1
+endi
+sql drop database escape_percentage
 system sh/exec.sh -n dnode1 -s stop -x SIGINT